Development of Gas-Responsive Porous Magnets via Host-Guest Charge Transfer
| Project/Area Number |
20K15294
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 34010:Inorganic/coordination chemistry-related
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| Research Institution | Tohoku University |
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Principal Investigator |
Zhang Jun 東北大学, 学際科学フロンティア研究所, 助教 (70870103)
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| Project Period (FY) |
2020-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | Porous magnet / Host-guest chemistry / Electron transfer / Charge transfer / Magnetic property / Electrical property / Electrical conductivity / Porous Magnet / Gas Sorption / Magnetic Property |
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| Outline of Research at the Start |
The reversible magnetic change of porous magnets has so far been observed via 1) structural modification, 2) spin meditation of oxygen, and 3) electronic state modulation. Here, I proposed a new concept -Host-Guest Charge Transfer (HGCT)- to achieve a reversible magnetic phase switch.
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| Outline of Final Research Achievements |
We demonstrated a guest-responsive porous magnet that is a paramagnet on I2 adsorption (with its magnetism ‘switched off’) and converts into a antiferromagnt on I2 desorption (with its magnetism now ‘switched on’) via host－guest electron transfer.
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| Academic Significance and Societal Importance of the Research Achievements |
「多孔質磁石」は、従来からよく知られた電場・磁場・光・圧力などの物理的な刺激とは異なり、「分子吸脱着」という化学的な刺激により駆動する材料です。本研究における、吸着分子とホスト骨格の間での直接的な電子授受により駆動する可逆磁気相変換は世界初観測であり、新たな駆動原理により「化学物質による物性制御」を実現したという点で、高機能分子デバイスの実現へ向けて、基礎・応用の両面から大変意義深い結果だと考えられます。このような材料は、化学的刺激により駆動する分子デバイスの新たな駆動原理の一つとして今後の発展が期待できます。
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Report
(3 results)
Research Products
(10 results)
